A hypothetical isotropic antenna is radiating in free-space. At a distance of 100 m from the antenna, the total electric field (E8) is measured to be 5 V/m. Find the (a) power density. (b) power radiated.

Q: In free space electric field component is E=(10ax+5az)cos(wt+2y-4z)V/m. Determine a)Magnitude of…

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Q: At large distances, the electric potential of a dipole 2qa is given by V=-2k. qa 14- What is the…

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Q: a) Compare E and H in dielectric and well-conducting medium with E and H in empty space. b) How can…

A: (a) Electric field (E) and magnetic field (H) in different mediums - In dielectric medium E and H…

Q: For a 90° corner reflector antenna shown on the right, the source feed is a dipole antenna oriented…

A: (A) The half-power beam width (HPBW) in the x-z plane can be found by considering the radiation…

Q: An antenna with maximum dimension of 50 cm radiates an RF signal with an operating frequency of 1080…

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Q: wo thin dipoles of lengths 0.1m and 1m are operating in free space at frequencies of 100 Miz and 10…

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Q: c) An array antenna consists of six vertical dipoles with their centers at half wavelength spacings…

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Q: Sizing 1o Transformers 1. Required transformer secondary voltage =. VAC %3! 2. Total current rating…

A: Assume power factor cosφ=1 1. Voltage supplied to all panels are 115 V The required secondary…

Q: c) Write a relationship that relates the electric and magnetic fields in the far field region of an…

A: (c) The electric and magnetic fields in the far field region of an antenna are related by the…

Q: (a) Calculate real power, reactive power and apparent power dissipated by each component (resistor,…

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Q: The magnetic field phasor of a uniform plane wave traveling in a non-magnetic medium with intrinsic…

A: As per our company guidelines we are supposed to answer only first 3 subpart kindly repost the other…

Q: Two half-wave dipoles are arranged as shown in the figure below, with antenna 1 transmitting 300W at…

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Q: If the radio wave transmitted at an angle of incidence 68 degree , with a wavelength of 6mm. I. Find…

A: Given information: The angle of incidence is θ=68° Wavelength is λ=6 mm

Q: A linearly polarised EM wave is propagating in the x-direction in free space. Its frequency is 2 x…

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Q: The skin depth at 10 MHz for a conductor is 1cm. Find the phase velocity of an electromagnetic wave…

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Q: 1. Drive the exact E field produced by an infinitesimal dipole located at the origin with a…

A: Introduction Electric Field and Magnetic Field: The electric field can be described in terms of flux…

Q: In free space E(z,t) = 70cos(@t – Bz)x (V/m).

A: we need to find out the average power for the given voltage.

Q: Find the electric field in terms of spherical coordinates given as the potential to be created by an…

A: The potential created by electric dipole will be Vdipoler,θ=r^·p→4πεor2 where,  εo=8.85×10-12 F/m…

Q: A cube of side 50cm and it placed in a uniform electric field = 4j+2k . Find out electric flux for…

A: given: electric field and side of cube is 50cm

Q: Determine the field strength of the radiated field produced at a distance of one km by a vertical…

A: Given information: Distance r=1 km Length of the vertical wire h=1 m Current carrier I=5 A Frequency…

Q: Determine the electric field strength at 1 km away from a transmitting vertical wire of 1 m length…

A: The rms value of the electric field strength at some distance r away from a transmitting wire can be…

Q: 4 (a) In general, the media in which the electromagnetic (EM) wave propagates include the free…

A: Note :As per our guidelines we are supposed to answer only one question. Kindly repost other…

Q: A plane electromagnetic wave is having a frequency of 20 MHz. If the value of relative permitivity…

A: Velocity (V)  of a plane wave in a lossless medium can be expressed in the following way:

Q: In the calculation of the radar cross-section for the surfaces and shapes more physical area will…

A: let the  incident power = Ei Reflected power  = Er

Q: Consider a uniform plane wave propagating in free space at a frequency of 2.45 GHz. The amplitude of…

A: Uniform plane waves are electromagnetic oscillations that maintain consistent characteristics across…

Q: In a material the loss tangent is 0.12 at 1MHz. The material has a refractive index of 1.33. Find…

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Q: Evaluate the power radiated by /10 dipole in free space if it carries a uniform current of 150 coswt…

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Q: 4) Why the current distribution in the /2 dipole antenna is sinusoidal?

A: A message signal is transferred from the sender to the receiver end. The signal is transmitted…

Q: B) An array of two identical 2 dipoles has a = 0 and d = 3λ/4, find: ii) nulls of the total field. 0…

A: To find:(i) Electrical field E at  .(ii) nulls of the total field.

Q: Еxample: A 31/4 dipole is radiating into free-space. Input power to the dipole is 100 W. Assuming an…

A: Given data Pin=100Wr=500mη=50%=0.5ϕ=00θ=600

Q: Example: A 31/4 dipole is radiating into free-space. Input power to the dipole is 100 W. Assuming an…

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Q: Practice: Obtain the equivalent resistance at the terminals a-b of the circuit shown. Answer:…

A: We will find the R equivalent using the delta to star conversion in this problem.

Q: A circular loop antenna with cross-sectional area 10 cm2 is absorbing power from electromagnetic…

A: The power absorbed by the circular loop antenna can be given by: P = (1/2) × R × I2   where ,  R is…

Q: (3) When a plane wave is incident from free space to a medium with intrinsic impedance of 0.57o, the…

A: According to question η1=η0η2=0.5η0    (FREE SPACE)

Q: An isotropic antenna is radiating evenly in the r–direction in free space. The total electric field…

A: Given information: The value of the electric field at 139 m,

Q: 1. Derive the expression for electric field at a point which at a distance R' from the centre of the…

A: Electric field due to an electric dipole at a point P distance R from centre on its axial line.

Q: A plane wave propagating in a lossless dielectric medium has an electric field given with a…

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Q: Consider the formula for skin depth of a material. a. What is the skin depth of copper at 10 MHz?

A: Given data: The material is copper. Frequency f=10 MHz

Q: What are transmission lines and what are the effects and causes of transmission lines, then mention…

A: Transmission lines are the interconnection between the generation and distribution of electrical…

Q: c) An array antenna consists of six vertical dipoles with their centers at half wavelength spacings…

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Q: In free space E(z,t) = 70cos(wt – Bz)x (V/m). Find the average power crossing a circular area of…

A: Consider the formula for the average power as, P=0.5EO2ηO×Area Determine the area as, A=R2π=22π=4π

Q: A short wire is modeled as an electric dipole and a small wire loop is modeled as a magnetic source,…

A: An electric dipole is defined as two equal and opposite charges separated by a distance. The…

Q: (2.a) When an electric field (E) (or voltage (V)) was applied to a material, what kind of phenomena…

A: 2(a) Behavior of conductor under the influence of electric field: When an electric field 'E' is…

Antenna Characteristics

The antenna is an important concept in the domain of electronics and communication engineering. An antenna forms an integral part of many commonly used devices such as wireless modems, routers, game controllers, mobile phones, bluetooth devices, and so on. In simple terms, any wireless communication makes use of antennas to serve the purpose. An antenna, also known by the term 'arial', is an electrical device that converts electrical signals into electromagnetic waves or electromagnetic waves into electrical signals. An antenna contains a transmission line usually made up of co-axial cable, it then receives the signals and converts them into electromagnetic waves, which are then transmitted via space into their required destination. A communication system essentially makes use of two antennas, a transmission antenna, which converts electrical signals into electromagnetic waves, and a receiving antenna, which receives the electromagnetic waves and converts them back into electrical signals.